[gnome-calendar] calendar-row: add calendar-color-image styleclass.

[Lapo Calamandrei <lapo src gnome org>]

commit e90c68e6c5d3d8a4944f00365ff5cce6fc926bc3
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Fri Jul 8 19:21:14 2016 +0200

    calendar-row: add calendar-color-image styleclass.

 data/ui/calendar-row.ui |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/data/ui/calendar-row.ui b/data/ui/calendar-row.ui
index 457ac3a..0313e56 100644
--- a/data/ui/calendar-row.ui
+++ b/data/ui/calendar-row.ui
@@ -17,6 +17,9 @@
             <property name="visible">True</property>
             <property name="can_focus">False</property>
             <property name="pixel_size">24</property>
+            <style>
+              <class name="calendar-color-image"/>
+            </style>
           </object>
           <packing>
             <property name="left_attach">0</property>